loop0: detected capacity change from 0 to 32768 btrfs: Bad value for 'max_inline' loop0: detected capacity change from 0 to 32768 gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS (format 1801)... gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms gfs2: fsid=syz:syz.0: first mount done, others may mount gfs2: fsid=syz:syz.0: Error 10 writing to journal, jid=0 ================================================================== BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline] BUG: KASAN: slab-use-after-free in gfs2_discard fs/gfs2/aops.c:587 [inline] BUG: KASAN: slab-use-after-free in gfs2_invalidate_folio+0x448/0x740 fs/gfs2/aops.c:625 Read of size 8 at addr ffff888052ee21d8 by task syz.0.0/5327 CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 list_empty include/linux/list.h:373 [inline] gfs2_discard fs/gfs2/aops.c:587 [inline] gfs2_invalidate_folio+0x448/0x740 fs/gfs2/aops.c:625 folio_invalidate mm/truncate.c:126 [inline] truncate_cleanup_folio+0x203/0x300 mm/truncate.c:146 truncate_inode_pages_range+0x2e7/0x10e0 mm/truncate.c:326 gfs2_evict_inode+0x348/0x1360 fs/gfs2/super.c:1517 evict+0x4f9/0x9b0 fs/inode.c:810 gfs2_evict_inodes fs/gfs2/ops_fstype.c:1756 [inline] gfs2_kill_sb+0x237/0x350 fs/gfs2/ops_fstype.c:1782 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435 task_work_run+0x251/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f270618d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2706fac038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f27063a5fa0 RCX: 00007f270618d169 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003 RBP: 00007f270620e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f27063a5fa0 R15: 00007ffc0eb6c768 Allocated by task 5327: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4138 [inline] slab_alloc_node mm/slub.c:4187 [inline] kmem_cache_alloc_noprof+0x1e1/0x390 mm/slub.c:4194 gfs2_alloc_bufdata fs/gfs2/trans.c:168 [inline] gfs2_trans_add_data+0x1f5/0x5f0 fs/gfs2/trans.c:209 gfs2_trans_add_databufs+0x15d/0x1c0 fs/gfs2/aops.c:57 gfs2_iomap_put_folio+0x1b3/0x340 fs/gfs2/bmap.c:991 iomap_write_iter fs/iomap/buffered-io.c:983 [inline] iomap_file_buffered_write+0xbf8/0x13d0 fs/iomap/buffered-io.c:1033 gfs2_file_buffered_write+0x4b8/0x840 fs/gfs2/file.c:1061 gfs2_file_write_iter+0x930/0x1160 fs/gfs2/file.c:1165 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x70f/0xd10 fs/read_write.c:684 ksys_write+0x19d/0x2d0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5327: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2376 [inline] slab_free mm/slub.c:4633 [inline] kmem_cache_free+0x197/0x410 mm/slub.c:4735 trans_drain fs/gfs2/log.c:1020 [inline] gfs2_log_flush+0x19ed/0x2620 fs/gfs2/log.c:1160 gfs2_kill_sb+0x5b/0x350 fs/gfs2/ops_fstype.c:1775 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x422/0x4c0 fs/namespace.c:1435 task_work_run+0x251/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888052ee21c0 which belongs to the cache gfs2_bufdata of size 80 The buggy address is located 24 bytes inside of freed 80-byte region [ffff888052ee21c0, ffff888052ee2210) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x52ee2 flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000000 ffff88803375ca00 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000240024 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5327, tgid 5326 (syz.0.0), ts 76864474926, free_ts 76831435234 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1585 prep_new_page mm/page_alloc.c:1593 [inline] get_page_from_freelist+0x3ac1/0x3c60 mm/page_alloc.c:3538 __alloc_frozen_pages_noprof+0x266/0x580 mm/page_alloc.c:4806 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2446 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2610 new_slab mm/slub.c:2663 [inline] ___slab_alloc+0xc3b/0x1500 mm/slub.c:3849 __slab_alloc+0x58/0xa0 mm/slub.c:3939 __slab_alloc_node mm/slub.c:4014 [inline] slab_alloc_node mm/slub.c:4175 [inline] kmem_cache_alloc_noprof+0x270/0x390 mm/slub.c:4194 gfs2_alloc_bufdata fs/gfs2/trans.c:168 [inline] gfs2_trans_add_meta+0x2e2/0xa50 fs/gfs2/trans.c:251 do_gfs2_set_flags fs/gfs2/file.c:265 [inline] gfs2_fileattr_set+0x843/0xac0 fs/gfs2/file.c:311 vfs_fileattr_set+0x901/0xd50 fs/ioctl.c:696 ioctl_setflags fs/ioctl.c:728 [inline] do_vfs_ioctl+0x180c/0x2750 fs/ioctl.c:869 __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x80/0x160 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5327 tgid 5326 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1130 [inline] __free_frozen_pages+0xd85/0x1030 mm/page_alloc.c:2707 discard_slab mm/slub.c:2707 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3176 put_cpu_partial+0x17e/0x250 mm/slub.c:3251 __slab_free+0x294/0x390 mm/slub.c:4503 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4138 [inline] slab_alloc_node mm/slub.c:4187 [inline] __kmalloc_cache_noprof+0x1c8/0x370 mm/slub.c:4344 kmalloc_noprof include/linux/slab.h:902 [inline] kzalloc_noprof include/linux/slab.h:1036 [inline] gfs2_open_common+0xb4/0x340 fs/gfs2/file.c:640 gfs2_open+0x137/0x1d0 fs/gfs2/file.c:690 do_dentry_open+0xdec/0x1960 fs/open.c:956 vfs_open+0x3b/0x370 fs/open.c:1086 do_open fs/namei.c:3845 [inline] path_openat+0x2caf/0x35d0 fs/namei.c:4004 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x249/0x2a0 fs/open.c:1455 Memory state around the buggy address: ffff888052ee2080: fb fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb ffff888052ee2100: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb >ffff888052ee2180: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb ^ ffff888052ee2200: fb fb fc fc fc fc fa fb fb fb fb fb fb fb fb fb ffff888052ee2280: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fc fc ==================================================================